<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>大学生选课系统头部-首页</title>
    <link rel="stylesheet" href="css/style.css" media="all">
</head>

<body background="images/mainbg.jpg">
<div class="clearfix" id="contentBox">
    <c:if test="${empty auser && empty tteacher && empty sstudent}">
        <a href="student_login.jsp" target="_parent">
            <div id="first" class="buttonBox">

                <button style="color:#666; font-size:20px;">学生登录</button>
                <div class="border"></div>
                <div class="border"></div>
            </div>
        </a>
        <a href="teacher_login.jsp" target="_parent">
            <div id="first" class="buttonBox">
                <button style="color:#666; font-size:20px;">教师登录</button>
                <div class="border"></div>
                <div class="border"></div>
            </div>
        </a>
        <a href="admin_login.jsp" target="_parent">
            <div id="first" class="buttonBox">
                <button style="color:#666; font-size:20px;">管理员登录</button>
                <div class="border"></div>
                <div class="border"></div>
            </div>
        </a>
    </c:if>
</div>
</body>

</html>